Homeowners typically pay a broad range for Lennox furnace and air conditioner exchanges, driven by unit size, efficiency, installation complexity, and regional price differences. The price bracket below reflects typical market ranges in the United States and highlights how the cost scales with efficiency and capacity.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Furnace unit only | $2,200 | $3,800 | $5,600 | Gas or electric, 80% to 96% AFUE |
| Air conditioner unit only | $2,700 | $4,500 | $7,000 | 2-5 ton, SEER 14 to 21 |
| Furnace + air conditioner package | $4,700 | $7,900 | $11,800 | Mid-range efficiency, common combo |
| Installation labor | $1,200 | $3,000 | $5,000 | Labor varies by home layout and permits |
| Furnace accessories | $150 | $600 | $1,200 | Flue, vent kit, thermostat wiring |
| Permits & inspections | $100 | $400 | $1,000 | Permitting may apply by locale |
| Warranty & service plan | $0 | $350 | $900 | Optional extended coverage |
Overview Of Costs
Prices vary by model and efficiency level, with Lennox offering midrange to premium options. The total project range for a full furnace and air conditioner replacement typically runs from roughly $6,000 to $15,000 before tax credits or rebates. A basic single-stage system sits toward the lower end, while high efficiency dual-stage or variable-speed systems sit at the upper end. Assumptions include a standard two-zone residential setup and average installation difficulty.
Cost Breakdown
Costs break down into equipment, installation labor, and added items such as permits, delivery, and accessories. The following table uses common price bands and typical quantities for a standard 2-3 ton cooling and 60-80 thousand BTU heating configuration.
| Category | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $1,800 | $3,300 | $5,000 | |
| Labor | $1,200 | $3,000 | $5,000 | |
| Equipment | $4,000 | $6,800 | $9,800 | |
| Permits | $100 | $400 | $1,000 | |
| Delivery/Disposal | $150 | $350 | $900 | |
| Accessories | $150 | $500 | $1,200 | |
| Warranty/Service | $0 | $350 | $900 |
What Drives Price
Key drivers include furnace efficiency measured by AFUE, air conditioner SEER rating, system capacity in tons, and installation complexity. Higher efficiency models with variable-speed fans and two-stage operation cost more upfront but can lower ongoing energy use. Regional pricing differences and local labor rates also influence final totals. Efficiency tiers and system integration commonly account for the biggest price gaps between low and high cost scenarios.
Regional Price Differences
Prices can vary by region due to labor markets, permitting, and shipment costs. In the Northeast, a full Lennox replacement often runs higher than the national average due to stricter efficiency requirements and shorter installation windows. The Midwest typically falls near the national average, with swings based on contractor competition. The Southeast may show lower installation costs but higher equipment premiums for humid climate configurations. Expect a regional delta of roughly ±10 to 20 percent depending on local conditions.
Labor & Installation Time
Typical installation time ranges from 1 to 3 days for a standard retrofit, with longer times for homes with restricted access or multiple zones. Labor costs reflect crew size and regional wage differences. Estimating labor hours accurately helps prevent surprise charges later, especially when new ductwork, gas lines, or vent relocations are required.
Additional & Hidden Costs
Surprises commonly include chimney or vent alterations, electrical panel upgrades, or refrigerant repacks if a system is not empty during replacement. Some properties require new duct sealing or insulation, which adds to the total. Permit fees, disposal of old equipment, and refrigerant recovery are additional items that can affect the final bill. Ask for a detailed, written estimate that itemizes these potential charges.
Real-World Pricing Examples
Three scenario cards illustrate typical outcomes for Lennox installations in U S homes. Assumptions: regional market, standard 2-3 ton cooling, and 60-80 thousand BTU heating capacity. The numbers include equipment, labor, and common extras but exclude tax credits.
Basic scenario: furnace and air conditioner with standard efficiency, standard ductwork, no extras. Specs: 2 ton AC SEER 14, furnace 80% AFUE, single-stage. Labor: 1.5 days. Total: approximately $6,000-$7,500. Per-unit note: $/ton and $/k BTU reflect typical value ranges.
Mid-Range scenario: higher efficiency, dual-stage heating, SEER 16-18, AFUE 95%, modest ductwork updates. Labor: 2 days. Total: approximately $9,500-$12,000. Per-unit costs include upgraded thermostat and enhanced air filtration.
Premium scenario: top-tier Lennox system with variable-speed compressor, SEER 20+, furnace with 96% AFUE, full duct sealing, smart zoning. Labor: 2-3 days. Total: approximately $12,000-$15,000. Per-unit costs reflect premium components and advanced controls.
Assumptions: region, specs, labor hours. This section shows how choices affect final price and helps compare options side by side.
Pricing FAQ
Common questions cover alignment with energy savings, rebates, and maintenance costs. Lennox systems often qualify for manufacturer rebates or utility incentives in many states. Maintenance plans vary by provider and region, frequently priced as annual packages in the hundreds of dollars. Comparing total ownership cost includes upfront price and ongoing energy savings.
What To Ask When Getting a Quote
Request a breakdown by components, include expected SEER and AFUE values, and confirm any ductwork or vent changes. Ensure quotes identify removal of old equipment, disposal, and permit costs. A well-documented estimate helps prevent scope creep and ensures accurate budgeting.